Dear Wowotoe,
Thanks for your inquiry.
Sorry that Spire.PDFViewer for ASP.NET doesn't support printing function at present. Yet our
Spire.PDF supports it, you could have a try. And here is a
guide for printing PDF.
Note alone two or more libraries can't be used in the same project, if you want to do that, please download our
Spire.Office product, and then reference the corresponding dlls from it.
Any question, welcome to get it back to us.
Sincerely,
Betsy
E-iceblue support team